You can replicate the bug here: http://www.trailbehind.com/node/1148091
For some reason, the following event will fire only if the user's cursor is over a marker, but I have seen it work properly elsewhere, and I'm not sure what's messing things up on my site:
GEvent.addListener(map, 'singlerightclick', function(latLng, src, overlay) {
console.log(1);
}
Thanks for any help you can give.